class Exercise_Select():
    def __init__(self,id,content,type,answer,KC,name):
        self.id = id #
        self.content = content#题干
        self.type = type#题型
        self.answer = answer#答案
        self.KC = KC#知识点
        self.name = name#名字

    def tostring(self):
        return "id:{},题干:{},答案:{}".format(self.id,self.content,self.answer)

